All Midjourney subscriptions renew automatically on the same day of the month and time of day you subscribed.
You can use the
/info command wherever you use the Midjourney Bot in Discord to check your next renewal date and time.
The date and time displayed will be your local time. Note that Daylight Saving Time may cause your renewal to occur an hour earlier or an hour later than the displayed time.
You can also check your next renewal date (but not time) from the Manage Sub page.
If you have a yearly plan, you won’t be billed every month, but your fast hours will refresh on the same schedule.